<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <script>
        var obj = {
            name: "lyy",
            other: {
                age: 19,
                name: "asdknlj"
            }
        }
        var jsonString = JSON.stringify(obj, function (k, v) {
            if (k === 'name') {
                return '123'
            }
            return v
        }, 4)
        console.log(jsonString);
        localStorage.setItem('jsonString', jsonString)
    </script>
</body>

</html>